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Eminence PXB board-only crossovers are a lower cost alternative to the “cabinet readymodels and are targeted specifically for custom cabinet projects as they do not include the terminal cup input connectors or L-pad found on the “cabinet readymodels. They feature advanced circuit design to both preserve the crossover and your drivers. A benefit of the design is to form a voltage divider across the high frequency driver. The high-pass protection uses custom-built aerospace lamps. The tungsten filaments effectively track the program material dynamically maintaining a safe maximum current level to the high frequency driver without introducing distortion. This circuitry provides smooth 3:1 analog compression during input overload conditions over 250 watts RMS. At full drive level approaching clipping the electrical attenuation to the protected high frequency driver is -4.5 dB. In every way Eminence pxb crossovers are a technically superior product. For use with 8 ohm drivers.